Finding the Fourth Proportional to 5,179,451.36, 7,147,486.32 and 2,856,342.68
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Solution
The fourth proportional to 5,179,451.36, 7,147,486.32 and 2,856,342.68 is: 3,941,666.56
Step by Step Solution
- Step 1: Write the proportion equation
5,179,451.36 : 7,147,486.32 = 2,856,342.68 : x - Step 2: Convert to fraction form
5,179,451.36/7,147,486.32 = 2,856,342.68/x - Step 3: Cross multiply
5,179,451.36x = 7,147,486.32 × 2,856,342.68 - Step 4: Simplify right side
5,179,451.36x = 20,415,670,230,532.14 - Step 5: Solve for x
x = 20,415,670,230,532.14/5,179,451.36 - Step 6: Final answer
x = 3,941,666.56
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.